Ballots giving parents the right to end selection in the remaining 164 grammar schools were given the go-ahead by Parliament this week.
Ministers were accused of rigging the rules in order to engineer the scrapping of grammar schools. But anti-selection campaigners said the ballot arrangements are unworkably complicated.
A petition of 20 per cent of eligible parents is needed to trigger a ballot. In 10 local authorities, the petition and ballot will include all parents.
Roy Hattersley, page 15